No 1-2 (2016)
3-6 623
Abstract
The calculation scheme for evaluation of the glass transition temperature and the flow temperature of plasticized polymers has been suggested. The scheme takes into account the chemical structure both of polymer and plasticizer, polymer molecular weight, intermolecular interactions between the polymer and the plasticizer, the van der Waals volume of the repeating unit of the polymer and molecule a plasticizer, the plasticizer concentration. Also a dilution effect, which influences on reducing the viscosity of the "polymer + plasticizer" with increasing concentration of plasticizer, also is bear in mind.
7-9 264
Abstract
The rheological characteristics of domestic brands PSU melts in the temperature interval from 240 to 360 ° C. First obtained the full curves of thermal stability and proposed formula to describe them.
10-11 329
Abstract
The modification of polyethylene of low density (LDPE) with 2.5-dihydroxy-2.5-dimethylhexyn-3 (DDH) has been carried out. It has been shown that an introduction into composition of LDPE not more than 5.0 mass p. of DDH leads to the improvement of rheological, physical-mechanical and heat-physical properties of the prepared materials. The optimal parameters of modification process of polyethylene with DDH have been revealed.
12-13 342
Abstract
Influence of a thin thinner of the EA brand and temperature on reokinetichesky properties of epoxy oligomer of the UP-610 brand baked by an aminny hardener of Benzam-Aba is investigated. Time of the beginning of gelation and gel time were determined by reokinetichesky viscosity-temperature dependences for binding EPH B with various ratio of a thinner of EA. It is established that at introduction of a thinner and temperature change time of viability of epoxy binding EPH B can be varied ranging from 25 minutes till 26 o'clock
14-16 338
Abstract
The effect of a random copolymer of propylene and ethylene on tensile strength of polypropylene was studied.
16-18 441
Abstract
As a result of the conducted researches compositions with use as a hardener of an epoxy oligomer of the low-molecular polyamide PO-300, providing decrease in toxicity of curing process and increasing of physicomechanical properties were developed.
18-24 365
Abstract
The results of the investigation of g-irradiated polymerization of various vinyl monomers in bulk and solution under the influence of reversible chain transfer agents are summarized. The principal possibility of controlled polymer synthesis at room temperature is shown. The facility and restrictions of this approach are discussed.
24-27 316
Abstract
Oligomers of different composition and structure are synthesized. Using the acceptor-catalytic method of polycondensation were obtained aromatic block-copolymers of constructional and film assignment. Physical and chemical properties of polymers are investigated.
28-29 284
Abstract
Computational method for determination of strength tear resistance of plastics by cutting a reinforcing element of the thin wire was proposed. The method allows to predict its value based on the known mechanical properties of the investigated plastic.
30-33 324
Abstract
The technique of definition of relaxation constants of the material included in the nonlinear equation of Maxwell-Gurevich. Secondary polyvinyl chloride processed the relaxation curves constructed at different temperatures and investigated the effect of temperature on the magnitude of the relaxation parameters. For each parameter matched the empirical formula describing the temperature dependence.
33-37 520
Abstract
Copolymers of amine-containing methacrylic monomers with higher alkyl (meth)acrylates was shown to be efficient viscosity modifiers for heavy crude oils and mineral oils. They also exhibit additional properties of inhibitors of asphaltene-resin-paraffin deposits (in crude oils) and dispersant additives (in mineral oils). A comparison of efficiency was done for copolymers with different structure and amino units content.
40-42 281
Abstract
Modification of structure-mechanical properties of high filled polyolefin compaunds
42-45 432
Abstract
The effect of enzyme treatment on the technical lignosulfonates laccase kinetics of synthesis and properties of materials based on copolymer of methacrylic acid.
45-49 329
Abstract
The results of investigations of the effect of ultrasound on the co-processing of polymer mixtures simulating waste polymers recyclable. The influences of ultrasound on the structural changes in the polymer compositions were determined.
49-57 988
Abstract
The review of a condition of a problem of reception, research and processing nanocomposite materials on the basis of a polymeric matrix is considered.
60-62 289
Abstract
In the influence of the concentration and nature of the polymers on the performance of FC and water absorption leather for the bottom of a Shoe, the filled polymer compositions. It was established that in the filling of the skin, indicators of hygroscopicity and water-yielding capacity is significantly reduced. One of the reasons for the decrease in hygroscopicity is to reduce the hydrophilic properties of the collagen by reducing the number of functional groups capable of adsorption of moisture.
ISSN 0554-2901 (Print)
